Re: [HSS] Exhaust Manifold Mods

Unknown

Hudson29@aol.com wrote:

>

> In a message dated 4/27/01 2:38:56 PM, geoffclark@xtra.co.nz writes:

>

> << the easiest way to attach the exhaust is to weld a two-bolt flange to the

> back of the manifold. This can be welded to the flange nut if it is till in

> place. I use a nickel-iron arc electrode for this, welding 1/2 an inch at

> a time starting in three different places and alternately moving around so

> as not overheat either the work or the electrode. Then you can weld a

> corresponding flange on to the exhaust pipe and your connection problems are

> cured forever. Why did Hudson use those hopeless threaded flanges? They

> were extremely difficult to pack tight. >>

>

> Quite a few of the old cars did it this way. I doubt the makers ever

> considered the car might last 10 years much less 100.

> I wonder if a broken manifold might be repaired the same way you

> described here. A lot of the mid twenties manifolds are broken right at the

> downturn.

>

> Paul O'Neil, Hudson29@aol.com

> Fullerton, California USA

>

>Yes, I have repaired manifolds this way, but it is tricky, as the arc-welding does not fuse well with the old cast iron, but rather sits on the surface. That is why you can weld aflange on quite successfully with it, asn the nickle iron fuses with the steel flange and sticks on to the end of the manifold. To repair a broken manifold it is best to fusion weld it